What is a linear spring rate?

A linear spring rate means the force the spring exerts increases at a constant rate as it is compressed. This provides predictable suspension behavior, which is beneficial for performance tuning.

What does the 61mm ID refer to?

The 61mm ID refers to the inner diameter of the spring. This dimension is important for ensuring the spring fits correctly onto the shaft of a specific coilover shock absorber.

What is this spring typically used for?

This spring is designed for custom coilover suspension builds, often for racing or track day vehicles where precise control over spring rates and suspension geometry is required.

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Specifications

Brand: AST
Part #: AST-80-180-61
UPC: astAST-80-180-61

AST Linear Race Springs - 80mm Length x 180 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 80mm Length x 180 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-80mm-length-x-180-n-mm-rate-x-61mm-id-single-t14-329676
Price: 103.36 USD
Availability: BackOrder

$103.36

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Key Features

Fits custom coilover builds requiring specific spring dimensions.
Features a linear spring rate of 180 N/mm for consistent suspension response.
Measures 80mm in length.
Has a 61mm inner diameter, suitable for specific coilover shock bodies.
Designed for performance applications where precise spring rates are needed.

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About this part

Product Details

AST is a well-known name in the performance suspension world, often associated with track-focused setups. This linear race spring is a component designed for custom coilover builds where precise spring rates are crucial for handling. With a length of 80mm and a spring rate of 180 N/mm, it offers a firm, consistent response.

The 61mm inner diameter means this spring is intended for specific coilover shock bodies. Linear rate springs are favored in racing because they offer predictable suspension travel and control, meaning the force increases steadily as the spring is compressed. This makes tuning suspension characteristics more straightforward for experienced builders aiming for optimal performance on the track.